/**
* Handles searching prefixes of titles and finding any page
* names that match. Used largely by the OpenSearch implementation.
+ * @deprecated Since 1.27, Use SearchEngine::prefixSearchSubpages or SearchEngine::completionSearch
*
* @ingroup Search
*/
return $this->strings( $this->handleResultFromHook( $srchres, $namespaces, $search, $limit ) );
}
- /**
- * Default search backend does proper prefix searching, but custom backends
- * may sort based on other algorythms that may cause the exact title match
- * to not be in the results or be lower down the list.
- * @param array $srchres results from the hook
- * @return array munged results from the hook
- */
private function handleResultFromHook( $srchres, $namespaces, $search, $limit ) {
- // Pick namespace (based on PrefixSearch::defaultSearchBackend)
- $ns = in_array( NS_MAIN, $namespaces ) ? NS_MAIN : $namespaces[0];
- $t = Title::newFromText( $search, $ns );
- if ( !$t || !$t->exists() ) {
- // No exact match so just return the search results
- return $srchres;
- }
- $string = $t->getPrefixedText();
- $key = array_search( $string, $srchres );
- if ( $key !== false ) {
- // Exact match was in the results so just move it to the front
- return $this->pullFront( $key, $srchres );
- }
- // Exact match not in the search results so check for some redirect handling cases
- if ( $t->isRedirect() ) {
- $target = $this->getRedirectTarget( $t );
- $key = array_search( $target, $srchres );
- if ( $key !== false ) {
- // Exact match is a redirect to one of the returned matches so pull the
- // returned match to the front. This might look odd but the alternative
- // is to put the redirect in front and drop the match. The name of the
- // found match is often more descriptive/better formed than the name of
- // the redirect AND by definition they share a prefix. Hopefully this
- // choice is less confusing and more helpful. But it might not be. But
- // it is the choice we're going with for now.
- return $this->pullFront( $key, $srchres );
- }
- $redirectTargetsToRedirect = $this->redirectTargetsToRedirect( $srchres );
- if ( isset( $redirectTargetsToRedirect[$target] ) ) {
- // The exact match and something in the results list are both redirects
- // to the same thing! In this case we'll pull the returned match to the
- // top following the same logic above. Again, it might not be a perfect
- // choice but it'll do.
- return $this->pullFront( $redirectTargetsToRedirect[$target], $srchres );
- }
- } else {
- $redirectTargetsToRedirect = $this->redirectTargetsToRedirect( $srchres );
- if ( isset( $redirectTargetsToRedirect[$string] ) ) {
- // The exact match is the target of a redirect already in the results list so remove
- // the redirect from the results list and push the exact match to the front
- array_splice( $srchres, $redirectTargetsToRedirect[$string], 1 );
- array_unshift( $srchres, $string );
- return $srchres;
- }
- }
-
- // Exact match is totally unique from the other results so just add it to the front
- array_unshift( $srchres, $string );
- // And roll one off the end if the results are too long
- if ( count( $srchres ) > $limit ) {
- array_pop( $srchres );
- }
- return $srchres;
- }
-
- /**
- * @param Array(string) $titles as strings
- * @return Array(string => int) redirect target prefixedText to index of title in titles
- * that is a redirect to it.
- */
- private function redirectTargetsToRedirect( $titles ) {
- $result = array();
- foreach ( $titles as $key => $titleText ) {
- $title = Title::newFromText( $titleText );
- if ( !$title || !$title->isRedirect() ) {
- continue;
- }
- $target = $this->getRedirectTarget( $title );
- if ( !$target ) {
- continue;
- }
- $result[$target] = $key;
- }
- return $result;
- }
-
- /**
- * @param int $key key to pull to the front
- * @return array $array with the item at $key pulled to the front
- */
- private function pullFront( $key, $array ) {
- $cut = array_splice( $array, $key, 1 );
- array_unshift( $array, $cut[0] );
- return $array;
- }
-
- /**
- * Get a redirect's destination from a title
- * @param Title $title A title to redirect. It may not redirect or even exist
- * @return null|string If title exists and redirects, get the destination's prefixed name
- */
- private function getRedirectTarget( $title ) {
- $page = WikiPage::factory( $title );
- if ( !$page->exists() ) {
- return null;
- }
- $redir = $page->getRedirectTarget();
- return $redir ? $redir->getPrefixedText() : null;
+ $rescorer = new SearchExactMatchRescorer();
+ return $rescorer->rescore( $search, $namespaces, $srchres, $limit );
}
/**
* @param int $offset Number of items to skip
* @return array Array of Title objects
*/
- protected function defaultSearchBackend( $namespaces, $search, $limit, $offset ) {
+ public function defaultSearchBackend( $namespaces, $search, $limit, $offset ) {
$ns = array_shift( $namespaces ); // support only one namespace
- if ( in_array( NS_MAIN, $namespaces ) ) {
+ if ( is_null( $ns ) || in_array( NS_MAIN, $namespaces ) ) {
$ns = NS_MAIN; // if searching on many always default to main
}
- $t = null;
- if ( is_string( $search ) ) {
- $t = Title::newFromText( $search, $ns );
+ if ( $ns == NS_SPECIAL ) {
+ return $this->specialSearch( $search, $limit, $offset );
}
+ $t = Title::newFromText( $search, $ns );
$prefix = $t ? $t->getDBkey() : '';
$dbr = wfGetDB( DB_SLAVE );
$res = $dbr->select( 'page',
/**
* Performs prefix search, returning Title objects
+ * @deprecated Since 1.27, Use SearchEngine::prefixSearchSubpages or SearchEngine::completionSearch
* @ingroup Search
*/
class TitlePrefixSearch extends PrefixSearch {
/**
* Performs prefix search, returning strings
+ * @deprecated Since 1.27, Use SearchEngine::prefixSearchSubpages or SearchEngine::completionSearch
* @ingroup Search
*/
class StringPrefixSearch extends PrefixSearch {
dépôts / lhc / web / wiklou.git / blobdiff